Outpatient retells Green’s experience of having life-threatening kidney disease diagnosed, and is as hard to stomach as Henoch-Schönlein purpura is to pronounce. Not for the squeamish or hypochondriac, though ‘technically interesting’ with some entertaining riffs, it’s like hospital food: well-meant but unfulfilling.

The Caves, 556 5375, until 28 Aug (not 17, 23), 4.35pm, £7–£8.